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随着孕周的增大,胎儿脐动脉S/D值呈逐渐下降的趋势。脐动脉S/D值反映血管远端的阻力,对判断胎儿宫内窘迫有着重要的价值[1],但对脐带绕颈胎儿S/D测量时选择不同的脐动脉测量节点,所得到的血流参数可能会有所不同,选择敏感性和特异性高的测量节点有利于更早、更准确地判断胎儿宫内窘迫的情况,为临床的治疗提供更早、更可靠的诊断依据。1资料与方法1.1临床资料:1试验组:选择我院2013年2月至2015年
With the increase of gestational age, fetal umbilical artery S / D values showed a gradual downward trend. S / D values of umbilical artery reflect the resistance of the distal vascular, has an important value in judging fetal distress [1], but for umbilical cord around the fetus S / D measurement of different umbilical artery measurement node selection, the resulting blood Flow parameters may be different, the selection of sensitive and specific measurement node is conducive to earlier and more accurately determine the situation of fetal distress, for clinical treatment to provide an earlier, more reliable basis for the diagnosis. 1 Materials and Methods 1.1 Clinical data: 1 test group: choose our hospital from February 2013 to 2015. 1